*{box-sizing:border-box;margin:0;padding:0}body{background:#111;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;-webkit-tap-highlight-color:transparent;color:#fff}img{max-width:100%;display:block}input::placeholder{color:#666}input:focus{border-color:#3b82f6!important}